Pedestal binder for locomotive frames



Aug. 23, 1932. B COQK PEDESTAL BINDER FOR LOCOMOTIVE FRAMES Filed Sept.17, 1931 I N VEN TOR.

Patented Aug. 23, 1932 stars BERNARD fcooK, or ROANOKE counrifvmemmPEDESTAL BINDER non 'LOCOMOTIVE FRAMES- Application filed. September 17,1931. Serial No. 563,340.

My invention relates to certain improvements in pedestal binders forlocomotive frames. The purpose of the invention is:

To prevent concentration of stresses in the binder when it ispressed'into place on the frame; Y

To arrange the fitting faces of that part of the pedestal binder whichbearsagainst the frames so they can be easily maintained;

To arrange the pedestal binder so there will be no possibility of ashoulder wearing on the frame fit of the binder to interfere with themaintenance of the fit between the pedestal binder and the frame, and tomake the,

pedestal binder easy to remove; also other features that will beexplained hereafter.

In the accompanying drawing, Figure 1 is an. elevation of the pedestalbinder.

Figure 2 is a plan view of the pedestal binder.

Figure 3 shows, in elevation, a portion of the locomotive frame takingin that part surrounding one of the axles and shows the pedestal binderin place.

Figure dis an arrangement of the details ofthe pedestal binder andpedestal differing from that shown in Figure 3, but serving, in a largemeasure, the same purpose- Referring to Figure 3, the locomotive frameiscomposed of'a toprail l, a bottom rail 2 and the pedestal 3.Thesepedestals are each side of the, opening to receive the axle box.The pedestal binder 4 is placed so as to cover this opening at thebottom and virtually to make the bottom rail continuous. It is verynecessary, in order to resist the very heavy forces set up in thelocomotive frame, that the contact surfaces 5, between the pedestalbinder 4 and the bottom part of the 49 pedestal 3, which parts we willcall the pedestal toes, should be very well fitted and should remain sofitted, and at the same time be so arranged that thepedestal binder canbe readily removed.

Under the heavy working forces of the locomotive it is practicallyimpossible to prevent some movement at the contact faces 5. This bringsabout wear of the parts and with this wear the pedestal binders becomeloose. 50 When the pedestal binders become loose,

the binder as. is left between the top of the Y a pedestal binder andthe bottom rail of the frame similar tolocation 6, as shown in Fig-- ure3. This clearance allows the pedestal binder to be tightened on theframe by bolts, similar to, 9. Y j Y Intheold method, however, wherethere are relatively sharp corners in the bottom of the slot in thepedestal binders, very heavy stressesare set up and the pedestal bindersare often broken at these sharp corners. In pressingthese old formpedestal binders in place, the bottom of the slot in the pedestal binderis often brought close against the toe of the pedestal at the same-timethe top of the pedestal binder comes in contact with the bottom of theframe rail at a location similar to 6 in Figure 3. This does not allowfor the tightening'of the pedestal binder by the bolts, similar to 9,nordoes it leave an opening for inserting a wedge for forcing off thebinder.

When the old-typepedestal. binder is applied and there is clearance leftbetween the bottom of the pedestaltoes and the bottom of the slot in thebinder, the wear between the contact surfaces of the binder and thepedes tal toe produces a slight shoulder. I This shoulder forms. a highspot which quickly wears off, on account of the small bearing, when thebinder is drawn up further on the taper of the pedestal toe, and allowsthe hinder to become loose. On this improved binder the clearance be.-tween thebottom of the toe, which is made flat, and the bottom oftheslot in the pedestal binder, which is made with a slight curve 7, isdeeper than the clearance allowed at the point 6; The endsof fthe'curve7 are carried further each way than the width of the bot- I Q l e h llfg i a t e l l ie i 's at he nsist-18,;

tom of the pedestal toe and are terminated by curves of verymuch'shorter radii, reversing entirely the direction of the surface asat'the point 8, and in this way makingthe surface 5 of the pedestalbinder so that it will entirely clear the surface 5 of the pedestal toe,where they contact, and allow the toe to-reach into the space so that noslight shoulder will be 'This'will'fix'the binder worn on the binder; sothat its surfaces 5 will'be fully mcontact throughout its lsextsntwthther urfaces of the pedestal toe.

The contact surface5 ofathepedestalbinder being free from and separatedfrom the curved surface 7, will permit the surface '5 Of the binder. tobebuilt up by the welding process when it becomes worn without anydamage to thequality of the metal of'the binder in the sections 7 and'atthepoi'nt 8. This building up of the worn surfaces allowsthe binder toberefinished refittedas new. T he slight thinningdownin' the depth of thepedestal binder in the central portion of the surface 7 and'the gradualchange ihthesec-v tion "the binder 1 at this point, 'prevent s thelocalizingfof' stresses in the binde'n as is case where the surfacessharp intersec tions,suc'h as in the oldiformof pedestalbindofthepedestal binders.

' 'It is'to benotedthat in the fittingof these er. It'w'i-llminimize thechancegof' fracture I pedestal binders they can be placed by hand,leaving afcl-earance at the'point'b, forcing them in place with theproper pressure, and

i" then having the pedestal binderbolt's 9 d'rawn tight; The farm of thepedestal binde r at the point 7 is such that it facilitatesthe "springingei *the binder un der the "load 6f these 7 bolts as the binder isdrawn tighuandgwill bring the surfaces 5in completeanduniform contact,and at'the sametime distribute the stresses in the section of the,binder at the point 7.f 'l

' The" curved portion in thebottombf the slot in the pedestal' bin derwill prevent this surfacefroin'ever coming" in contact with the bottomof the toe of the pedestal, sothat under every condition there ivillbe'sufficient room to enter a wedge to drive the binder 01f when'jit isdesirable to'removethe same, even thoughthe wedpging'action holds itvery tight. Referring to Figure 45; The parts 5, and 8 are duplicates,in shape and in function, of

parts andS of Figure 3. The flat surface at 7 Figure 4, in conjunctionwithsurface 1Q will serve tokeep the surfaces from ever comingltogethenThe curved end extension's 8' of the groove in the pedestal binder 4,used in connection with the plain surface 7 f, Figurefl', whilefit maynot'fbe' thepre:

" ferriedarrangemenuiwill prevent thelocalizing of s tresse's 'at,' 8,and will permit the build;-

.ing' up of thesurfa'ces 5" by'the welding prof-i cess without injury tothe qualitviof the metal Figure 4, just as Figure 3. r r r In the matterof preventing contact between the bottom of the pedestaland the bottomof the slot in the binder, under all circumstances,

the use of the surface 10 Fi 'ure 4 serves iust V i 7 9 does the"arrangement in p as well in conjunction withthe surface 7, of I FigureS,as with surface 7 Figure 4.

Having described my invention sothat any one familiar with the art canreadily use the am an p rc v it adva I claim:

'1. In a locomotive or vehicle frame, the

combination @ofupedestals and a pedestal binder, said binder having aslot receiving and making contactwiwith the toe of each pedestal, saidslot having at its bottom a curved surface 'terminatingin additionalcurves reversing the direction of said surface, said additional' curvesextendingbeyond the contact surface betweenisaidpedestal toe andsaidbinder.

,7 2. Ina locomotive orvehicle frame, the

combination of pedestals and a pedestal binder, said binder having aslotreceiving and making contact with the toe ofeach pedestal, said slotbeing recessed at the bottom beyond the cont-act surfaces between saidpedestal toe and said binderso as to provide contact 1 0f the binderwith thepedestal toethrouglrout the whole contact surface of the'binderI3. In a locomotive or vehicle framg the making contact with the sides ofthe toelof eachlpedestal, the bottom of the pedestal toe and the bottomof said slot being of different contours to prevent them" coming incontact with each other.

5. In a locomotive, or vehicle framefthe 1 combination of pedestals anda pedestal b-inder, said binder having a slot receiving and makng'c'ontact with thetoeof each pedestal, said slot being recessed atthebottom beyond the contact surfaces sofas to permit'thebuild :11; lngiup of the whole of the contact surfaces by weldmg without bringing thewelding metal in contact with the bottom of'the" slot. .6, A locomotiveor vehicle frame pedestal binder, having a slot'with contacting sides1:;

and, a curved bottom.

7. A locomotive or vehicle frame pedestal binder, having a slot withcontacting sides and a curved bottOmQsaidcur ed bottomgex tending beyondsaid corizactingsides.

In testimony whereof, I- hereunto alfiX -my h signature this 14th ofSept, 1931.

